In India, a minimum of 3 years of work experience is necessary to be appointed as an assistant professor in any of the IITs. (Years during the PhD or master's are not counted, but any year spent outside university after bachelor's will count.)

Is such a work experience a necessity even in US universities? If yes, how much will this weigh towards selection? If the candidate has only a post-bachelor's experience, what should be highlighted from that so as to enhance this application?